使用带有嵌入式方形铅封堵器的抛物面单毛细管X射线透镜获得准平行X射线微束
Quasi-parallel X-ray microbeam obtained using a parabolic monocapillary X-ray lens with an embedded square-shaped lead occluder
摘要:
设计了一种抛物面单毛细管X射线透镜(PMXRL),用于有效地将实验室点X射线源约束为平行光束。方形导线封堵器(SSLO)用于阻挡PMXRL中的直接X射线。为了设计PMXRL,我们使用Python模拟透镜的圆锥参数(p = 0.001 mm),然后使用绘图机绘制相应的透镜(p = 0.000939 mm),总长度为60.8 mm。我们将SSLO放置在透镜入口处进行光学测试。结果表明,在透镜出口15-45 mm范围内,受控出射光束的发散角小于0.4 mrad,在X射线成像方法中获得了良好的光学性能。本文报道了设计细节。
英文摘要:
A parabolic monocapillary X-ray lens (PMXRL) is designed to effectively constrain a laboratory point X-ray source into a parallel beam. A square-shaped lead occluder (SSLO) is used to block direct X-rays in the PMXRL. To design the PMXRL, we use Python to simulate the conic parameter (p = 0.001 mm) of the lens and then use a drawing machine to draw a corresponding lens (p = 0.000939 mm) with a total length of 60.8 mm. We place the SSLO at the lens inlet for optical testing. The results show that the controlled outgoing beam has a divergence of less than 0.4 mrad in the range of 15-45 mm of the lens outlet, which achieves excellent optical performance in X-ray imaging methodology. The design details are reported in this paper.
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